mud logging using Mud Density Sensor

The CNPS-ML-B11 drilling fluid density sensor is a single crystal silicon resonant density sensor for measuring the density of drilling fluid. The sensor adopts EJA118W, a diaphragm-sealed differential pressure transmitter imported from Japan, which has the advantages of high measurement accuracy, stable performance, and good repeatability. The outer mounting bracket is made of stainless steel, and it is corrosion-resistant and has a long service life. The base is detachably attached with a long rod, which can be adjusted according to the depth of the mud. It is an important sensor for oil and gas exploration work, which can be applied to various harsh environments such as oilfields.

The CNPS-ML-B11 drilling fluid density sensor uses a differential pressure differential mode of operation. Two pressure bellows with corrugated membranes installed at different heights detect the pressure difference produced by the liquid at different depths. The pressure difference is proportional to the liquid density. The two “H” shaped vibration beams on the sensor convert the differential pressure signal into a frequency signal, send it to the pulse counter, and then pass the difference between the two frequencies directly to the CPU (microprocessor) for data processing. After D/A conversion, Output 4 to 20mA standard DC current signal corresponding to drilling fluid density can also be directly transmitted by digital signal.

EJA118W transmitter can also transmit data through digital communication mode through I/O port and external device BT200. That is to use HART protocol (1.2kHz) to superimpose data signal on 4~20mA signal line. When data communication, frequency signal No interference effect on the 4-20mA signal.

Power supply:+17V ～ 42V DC（Recommend +24V DC）

Measuring range:0.96 ～ 2.76g/cm3（Can be set according to user needs）

Output current:4～20mA DC 

Measurement accuracy: ±0.5％FS  

Environmental conditions:Sensor working temperature -40℃ ～ +85℃

Relative humidity:5 ～ 95%RH